Radiator valve



lll/111111, l f g 4 i May 22, 1928.'

J. H. URKE ET AL RADIATOR VALVE Filed Aug. 2, 1925 WTA/55556 Patented May 22, 192s.

UNITED STATES PATENT OFFICE.

JOHN H. URKE AND LEROY R. METCALF, OF EAST ST. LOUIS, ILLINOIS.

RADIATOR VALVE.

Application iled August 2, 1926.A Serial No. 126,584.

This invention relates to radiator valves and has for its object the production of a simple and efficient self adjusting steam radiator air valve, which will close, when a predetermined temperature is reached:

Another object ofthis invention, is the production of a radiator valve, .which consists of a minimum number of parts, and may therefore be cheaply constructed.

Other objects and advantages of this invention will appear throughout the following specification and claim.

In the drawings:

Figure l is a side elevation of the valve attached to a radiator.

Figure 2 is a section taken on line 2 2 of Figure l.

Figure 3 is a section taken online 3 3 of Figure 2.

Figure 4 is a section taken on line 4-4 of Figure 2.

By referring to the drawings, it will be seen that l designates the radiator, which is provided with the usual nipple 2, to which is secured the threaded neck 3 ofthe valve casing 4. The casing 4 is preferably circu-y lar in shape, and is provided with an exhaust vent 5 of material size in the top thereof. The vent 5 is provided with an enlarged valve seat 6 at the inner end thereof, as shown in Figure 2. The front face of the casing 4 is closed by means of a threaded cap 7, which capmay be removed to permit access to the interior of the casing, when desired.

A pair of guide brackets 8 are carried by the inner face of the casing 4, near the vent- 5, and a plunger valve is slidably mounted through these brackets, as shown in Figures 2 and 3. This plunger valve 9 is provided with a round nose l0, which is adapted to seat upon the valve seat 6 and close the vent 5 as will be described in the following. v n

An expansible metal strip ll. is secured to the inner portion of the casing 4, at one end by means of a rivet l2. This strip ll is arranged in a bow, the upper end of` the bow being secured to the bottom of the plunger valve 9. A stop pin 13 is passed through the plunger valve 9 between the guide brackets 8. This stop pin will limit the movement of the plunger valve through the guide brackets 8.

From the foregoing description, it will be seen that the cold air in the radiator will freely escape through the vent 5, but as soon as the temperature reaches a predetermined degree, the bowed metal strip, which is made of suitable thermostatic material, will expand and force the plungervalve 9 tightly"y upon the seat 6, thereby closing the vent 5 against the escape of steam.

It should be further understood that certain detail changes in the mechanical structure may be employed, and that Vthe various parts may be madeof such material as may be desired, without departing from the spirit of the invention, so long as these changes fall within the scope of the appended claim.

Having described the invention, what is claimed is:

An automatic radiator valve comprising a relatively shallow closed casing having a coupling nipple opening through the Wall thereof and a discharge or outlet opening diametrically'opposite the nipple opening,

a pair of spaced guides carried by one Wall within the casing and arranged adjacent to and in alinement with the discharge opening, a valve pin carried by'saidguide members in alinement with said discharge opening having the end adjacent the discharge opening rounded to engage in and close the same, a stop pin carried by the valve pin between the guides designedto limit the longitudinal movement of the valve pin, and

a substantially U-shaped thermostatic strip i having one end secured to the wall of the casing .adjacent the inlet end ofthe couplrng nipple to position the leg in close proximlty to and across the inlet, the other end i of said thermostatic strip being secured to the inner end of said valve stem to reciprocate the same for the opening and closing of the outlet aperture.

In testimony whereof we altix our signatures.

JOHN H. URKE. LEROY R. METCALF.v 

